Overview
Features and Benefits
- 660ns Conversion Time
- 20-Pin Narrow DIP Package
- No External Clock
- Pin-Compatible Upgrade for Industry-Standard 7820
- 100kHz Input Signal Bandwidth
- Bipolar/Unipolar Inputs
- Single +5V or Dual ±5V Supplies
- Ratiometric Reference Inputs
- Static and Dynamic Tested
- Internal Track/Hold
Product Details
The MX7821 high-speed, microprocessor-compatible (μP), 8-bit analog-to-digital converter (ADC) is a plug-in upgrade fro the industry-standard 7820. The MX7821 uses a half-flash technique, resulting in a 660ns conversion time vs. 1.36μs for the 7820. A VSS pin, not supplied by the 7820, supports dual power supplies and bipolar analog inputs.
The MX7821 has track-and-hold function capable of digitizing a 100kHz signal, and is tested for both its static and dynamic capability. The converter-μP interface appears as a memory location or input/output port that requires no external interface logic. The data outputs use latched, three-state buffered circuitry for direct connection to a μP data bus or system input port. The MX7821 has an overflow output for cascading devices to attain higher resolution. The ADC's input/reference arrangement enables ratiometric operation. For a detailed description of MX7821 operation, refer to the MX7820 data sheet.
Applications
- Audio Systems
- Digital-Signal Processing
- High-Speed Data Acquisition
- High-Speed Servo Loops
- Telecommunications
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
Product Recommendations
MX7821 Companion Parts
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| MX7821KN+ | Material Declaration | Reliability Data | Plastic Dual-In-Line, Narrow (0.3in) | |
| MX7821KR+ | Material Declaration | Reliability Data | Small-Outline IC, Wide (0.3in) | |
| MX7821KR+T | Material Declaration | Reliability Data | Small-Outline IC, Wide (0.3in) | |
| Wafer Fabrication Data |
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